'use strict';
const path = require('path');
const defaultSettings = require('./src/settings.js');

function resolve(dir) {
    return path.join(__dirname, dir);
}

const name = defaultSettings.title; // 网址标题
const port = 8013; // 端口配置

// All configuration item explanations can be find in https://cli.vuejs.org/config/
module.exports = {
    // hash 模式下可使用
    // publicPath: process.env.NODE_ENV === 'development' ? '/' : './',
    publicPath: '/',
    outputDir: 'dist',
    assetsDir: 'static',
    lintOnSave: process.env.NODE_ENV === 'development',
    productionSourceMap: false,
    devServer: {
        port: port,
        open: true,
        overlay: {
            warnings: false,
            errors: true
        },
        proxy: {
            '/api': {
                target: process.env.VUE_APP_BASE_API,
                changeOrigin: true,
                pathRewrite: {
                    '^/api': 'api'
                }
            },
            '/auth': {
                target: process.env.VUE_APP_BASE_API,
                changeOrigin: true,
                pathRewrite: {
                    '^/auth': 'auth'
                }
            }
        }
    },
    configureWebpack: {
        // provide the app's title in webpack's name field, so that
        // it can be accessed in index.html to inject the correct title.
        name: name,
        resolve: {
            alias: {
                '@': resolve('src'),
                '@crud': resolve('src/components/Crud')
            }
        }
    },
    chainWebpack(config) {
        config.plugins.delete('preload'); // TODO: need test
        config.plugins.delete('prefetch'); // TODO: need test

        // set svg-sprite-loader
        config.module
            .rule('svg')
            .exclude.add(resolve('src/assets/icons'))
            .end();
        config.module
            .rule('icons')
            .test(/\.svg$/)
            .include.add(resolve('src/assets/icons'))
            .end()
            .use('svg-sprite-loader')
            .loader('svg-sprite-loader')
            .options({
                symbolId: 'icon-[name]'
            })
            .end();

        // set preserveWhitespace
        config.module
            .rule('vue')
            .use('vue-loader')
            .loader('vue-loader')
            .tap(options => {
                options.compilerOptions.preserveWhitespace = true
                return options;
            })
            .end();
        // set eslint rules
        config.module
            .rule('eslint')
            .use('eslint-loader')
            .loader('eslint-loader')
            .tap(opt => {
                opt.emitWarning = opt.emitError = opt.failOnWarning = opt.failOnError = true;
                return opt;
            });

        config
            // https://webpack.js.org/configuration/devtool/#development
            .when(process.env.NODE_ENV === 'development',
                config => config.devtool('cheap-source-map')
            );

        config.when(process.env.NODE_ENV !== 'development',
            config => {
                config
                    .plugin('ScriptExtHtmlWebpackPlugin')
                    .after('html')
                    .use('script-ext-html-webpack-plugin', [{
                        // `runtime` must same as runtimeChunk name. default is `runtime`
                        inline: /runtime\..*\.js$/
                    }])
                    .end();
                config.optimization.splitChunks({
                    chunks: 'all',
                    cacheGroups: {
                        libs: {
                            name: 'chunk-libs',
                            test: /[\\/]node_modules[\\/]/,
                            priority: 10,
                            chunks: 'initial' // only package third parties that are initially dependent
                        },
                        elementUI: {
                            name: 'chunk-elementUI', // split elementUI into a single package
                            priority: 20, // the weight needs to be larger than libs and app or it will be packaged into libs or app
                            test: /[\\/]node_modules[\\/]_?element-ui(.*)/ // in order to adapt to cnpm
                        },
                        commons: {
                            name: 'chunk-commons',
                            test: resolve('src/components'), // can customize your rules
                            minChunks: 3, //  minimum common number
                            priority: 5,
                            reuseExistingChunk: true
                        }
                    }
                });
                config.optimization.runtimeChunk('single');
            }
        );
    },
    transpileDependencies: [
        'vue-echarts',
        'resize-detector'
    ]
};
